Country music star Dolly Parton has signed up to play this year's Glastonbury Festival.

The 9 To 5 star announced the news on Twitter, where she has almost three million followers, saying: " I'm incredibly excited to FINALLY announce that the BlueSmokeWorldTour is coming to GlastoFest on June 29th! Stay tuned for more info."

It is not known if she will headline the Sunday night slot - the festival's finale - or whether she will play the main stage or one of the smaller stages.

Emily Eavis, whose father Michael founded the festival in 1970, said: " We are delighted to say that Dolly is coming to Glastonbury... It really doesn't get much better than this!"